CVE-2026-74732 PUBLISHED

drm/amd/display: Check for tg ops in dce110_set_avmute

Assigner: Linux
Reserved: 15.08.2026 Published: 22.08.2026 Updated: 22.08.2026

In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Check for tg ops in dce110_set_avmute

Some older DCE timing generators do not implement is_tg_enabled in their ops table. Calling it unconditionally when waiting for AV mute frames causes a NULL pointer dereference on Southern Islands dGPUs when turning the display off over HDMI.

Check that tg and the required ops exist before waiting for frames.

(cherry picked from commit 2686a0c0aaa07bec2e24131835cf27b5fd4935a5)

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 853c2d31408bd45dcf92d0eb1f06eb439a56cf04 (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to d089f32d34f821c8f0ef23d5fcd77bd43c1b3b92 (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 5edbb409b0bc5001195f4b7cfca19122361211a1 (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 3141e3d61469bba2624a91c5e2407f110b33b29e (excl.)
  • affected from 0 to 6.12.104 (excl.)
  • affected from 0 to 6.18.45 (excl.)
  • affected from 0 to 7.1.9 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • unaffected from 6.12.104 to 6.12.* (incl.)
  • unaffected from 6.18.45 to 6.18.* (incl.)
  • unaffected from 7.1.9 to 7.1.* (incl.)
  • unaffected from 7.2 to * (incl.)

References